Add docs for `variations` key in `theme.json`#49826

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oandregal merged 3 commits intotrunkfrom

add/docs-for-theme-json-variations

Apr 17, 2023

Commits on Apr 14, 2023

Document variations in theme.json
oandregal
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Commits on Apr 17, 2023

Fix grammar

andrewserong
authored and
oandregal
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Add caveat about what style variations are considered
oandregal
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